Toby Gerhart: Fullback

He showed glimpses of potential throughout the season, but spent most of his snaps either blocking or running up the middle in short yardage situations.

Sounds like a fullback to me.

Gerhart certainly has the size and the ability to play fullback, the only issue would be the lack of depth at halfback which could be easily solved in free agency.

Vikings fullback Nafahu Tahi is a free agent this offseason, Gerhart could help the team save some money and move up to fullback.

Brian Robison: Outside Linebacker

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I know, I know, I'm crazy, but hear me out.

The Vikings could face a very likely future without outside linebacker Ben Leber. He is a free agent, and at 33 very unattractive to resign.

Robison just signed a three year, $14.1 million contract with the Vikings.

The defensive end hasn't seen much in the way of starting time, but has shown glimpses of potential in a limited role.

It isn't uncommon for defensive ends to switch to outside linebacker, especially when they don't have the right size to play on the line.

At 6-foot-3, 253 pounds, Robison is slightly too small to play defensive end. He could see some more success at linebacker.

Moving Robison to linebacker could also allow the Vikings to keep Ray Edwards, who is emerging as one of the better defensive ends in the division.

Antoine Winfield: Safety

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At 33 years old, Antoine Winfield has shown no signs of slowing down—at least not yet.

He is the best cornerback on the team, and arguably the best tackling corner in the NFL.

As many veteran corners switch to safety late in their career, I suggest Winfield do the same.

Because he is such a great tackler and possesses great leadership ability, I think he would be a great fit to play safety in the Vikings Tampa 2 defense—one that is so demanding of the team's safeties.

Once his body starts to slow down a little bit, safety could be a much better fit for Winfield.

This would allow him to mentor younger corners, while still being on the field.